METHOD AND APPARATUS FOR PROVIDING AN INDICATION OF THE COMPOSITION OF A FLUID PARTICULARLY USEFUL IN HEAT PUMPS AND VAPORIZERS

Title:

METHOD AND APPARATUS FOR PROVIDING AN INDICATION OF THE COMPOSITION OF A FLUID PARTICULARLY USEFUL IN HEAT PUMPS AND VAPORIZERS

Document Type and Number:

WIPO Patent Application WO2002021055

Kind Code:

A3

Abstract:

A method and apparatus for providing an indication of the composition of an examined fluid by using an electrical resistor, particularly a positive temperature coefficient thermistor, for measuring the thermal conductivity of the examined fluid with the known thermal conductivity of different fluid compositions. The method and apparatus are particularly described for indicating the relative proportions of a working fluid in the liquid and vapor phases in one or more stages of a heat pump. Another described application is for indicating the liquid level in a liquid vaporizer.

Inventors:

GOLAN GADY (IL)
SHAVIT ZEEV (IL)

Application Number:

PCT/IL2001/000836

Publication Date:

December 19, 2002

Filing Date:

September 05, 2001

Export Citation:

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Assignee:

A T C T ADVANCED THERMAL CHIPS (IL)
GOLAN GADY (IL)
SHAVIT ZEEV (IL)

International Classes:

F25B49/00; G01N25/18; G01N27/18; F25B30/02; F25B39/02; F25B41/06; (IPC1-7): H05B1/02; G01F1/68; G01F25/00

Foreign References:

US4575260A	1986-03-11
US5031126A	1991-07-09
US5335513A	1994-08-09
US4319483A	1982-03-16
US3890588A	1975-06-17

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